1222001011 has 8 divisors (see below), whose sum is σ = 1523533824. Its totient is φ = 952208520.

The previous prime is 1222001009. The next prime is 1222001029. The reversal of 1222001011 is 1101002221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222001011 - 2¹ = 1222001009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222001041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7934995 + ... + 7935148.

It is an arithmetic number, because the mean of its divisors is an integer number (190441728).

Almost surely, 2^1222001011 is an apocalyptic number.

1222001011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222001011 is a deficient number, since it is larger than the sum of its proper divisors (301532813).

1222001011 is a wasteful number, since it uses less digits than its factorization.

1222001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15870161.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1222001011 is about 34957.1310464689. The cubic root of 1222001011 is about 1069.1136022349.

Adding to 1222001011 its reverse (1101002221), we get a palindrome (2323003232).

The spelling of 1222001011 in words is "one billion, two hundred twenty-two million, one thousand, eleven".